typedef unsigned char u8;
typedef unsigned short u16;
typedef  unsigned int u32;
typedef unsigned char boolean;
typedef unsigned char type;
#define  True		1;
#define	 False		0;	
#define  LDT_SEL	16*4;
#define	STACKTOP	16*4;
#define SEND	0
#define RECEIVE	1
#define BOTH	2

 
